UVa 10763 - Foreign Exchange

统计国家代号出现的次数，如果去的和来的相等就输出YES即可。

import java.util.*;

public class Main10763 {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		while(true) {
			int n = scan.nextInt();
			if(n == 0) break;
			int[] a = new int[500000], b = new int[500000];
			Arrays.fill(a, 0);
			Arrays.fill(b, 0);
			int maxg = 0;
			for(int i=0; i= b)
			return a;
		else
			return b;
	}

}